FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\fz30
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General Information
Symbol
Dmel\fz30
Species
D. melanogaster
Name
FlyBase ID
FBal0004946
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
fzK21, K21
Key Links
Mutagen
Nature of the Allele
Progenitor genotype
Caused by aberration
Cytology
Description
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In

external sensory organ precursor cell I & centrosome (with fz37)

external sensory organ precursor cell I & spindle (with fz37)

macrochaeta & adult thorax

mesothoracic tergum & sensory mother cell & spindle (with fz37)

spindle & external sensory organ precursor cell I (with fz37)

wing & microchaeta

Detailed Description
Statement
Reference

The arista of fz30 mutant flies contain branched laterals that are also shorter than in controls.

fz30/fz21 transheterozygous adults show hair polarity defects in abdominal bristles.

Approximately 15% of fz30/fz23 mutant mushroom bodies exhibit medial lobe fusion phenotypes.

fz15/fz30 transheterozygous mutants exhibit 'rough' eyes. A Fourier transform of the mutant eye image reveals a set of concentric circles reflecting a non-ordered arrangement, instead of distinct reflexes up to the fourth order, as in wild-type. More intense regions arranged as apexes of hexagons, reflecting the existence of small regions of the eye surface with dense hexagonal ommatidial packing, can also be seen in the Fourier transform of these mutants. The diffraction pattern from the cornea of these transheterozygotes is noticeably smeared and only reflexes of the first order arranged in the hexagon apexes are observed. This confirms the limited periodicity of ommatidial arrangement and the existence of only small regions with dense hexagonal packing of ommatidia in the mutant flies.

While the borders of the wild-type ommatidia are tightly aligned to each other, irregular infiltrations of the lens material fill the gap between the lenses of fz15/fz30 transheterozygous mutants. These infiltrations indicate that the packing of the mutant lenses is less compact, making them more loosely aligned to each other, explaining the 'rough' appearance and the lack of regularity.

The surface of the ommatidial lens at the nano-scale represents the array of nipples with a cross-section of 250nm and height of 30nm. fz15/fz30 transheterozygous mutant nipples are shorter by 5nm but have the same broadness as those of wild-type flies.

The directional preferences of growing microtubules in fz30/fz23 wing cells is not significantly different from that seen in wild type at 24 hours after puparium formation.

fz21/fz30 stage 16 embryos have longer dorsal trunks than normal.

The planar polarity defects seen in the eyes of animals expressing fzScer\UAS.cAa under the control of Scer\GAL4hs.2sev are almost completely suppressed by fz30 (76.0% of ommatidia are correctly rotated).

fz37/fz30 show defects in the orientation of the mitotic spindle in dividing pI sensory precursor cells.

In fz30/fz37 pupae, the mitotic spindles of dividing sensory organ precursor cells in the developing notum are not aligned with the anterior-posterior axis, but instead are randomly oriented.

In fz37/fz30 mutant pupae, unlike wild-type, the pI cells exhibit almost no centrosome rotation before spindle formation. Complete rotation values for the spindle are similar to wild-type, however in 7% of mutant pI cells, the spindle rotates in one direction before rotating in the opposite direction, bidirectional movements are not seen in wild-type. The spindle does not line up properly with the pon crescent, leading to defective partitioning of pon. 5% of fz37/fz30 flies have at least one bristle with two shafts and two sockets on the notum.

Wings have an abnormal planar tissue polarity pattern in fz30/Df(3L)fz-D21 animals.

Embryos lacking maternal and zygotic fz function (derived from a cross between fz30/fz23 males and females) are missing the RP2/sib lineage in 1-3 hemisegments in 15% of cases. Row 6 neuroblasts are infrequently missing in a partially penetrant manner. Embryos lacking maternal and zygotic fz function (derived from a cross between fz1/fz30 males and females) are missing the RP2/sib lineage in 1-2 hemisegments in 10% of cases.

In fz3/fz37 transheterozygotes the socket, shaft and pIIb cells are always localised in the region of the cell in contact with pIIb. The socket cells always occupies an eccentric position.

Clones in adult wings cause wild type hairs distal to and in part anterior and posterior to the clone displaying abnormal polarity have a strong bias to point towards, rather than away from the clone. Clones in differentiating pupal wings show the same phenotype. This is referred to as an 'attractive' non-cell-autonomous effect. Wild type hairs at the proximal edge of the clone are usually rescued.

fz30/Df(3L)fz-D21 mutants carrying Dvir\fzhs.PJ and raised at 29oC are substantially rescued for the wing polarity and multiple hair defects. Dvir\fzhs.PJ produces a gain of function phenotype similar to that caused by fzI.hs.

Strong phenotype.

Strong thoracic bristle phenotype; strong wing-hair disorientation.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
NOT Enhancer of
Statement
Reference

fz[+]/fz30 is a non-enhancer of abnormal neuroanatomy phenotype of DAAMEx1

fz30 is a non-enhancer of visible phenotype of upd1GMR.PB

Suppressor of
NOT Suppressor of
Statement
Reference

fz30 is a non-suppressor of visible phenotype of upd1GMR.PB

Phenotype Manifest In
Enhanced by
Statement
Reference

fz37/fz30 has eo neuron phenotype, enhanceable by numb796

fz37/fz30 has thecogen cell phenotype, enhanceable by numb796

Enhancer of
Statement
Reference

fz23/fz30 is an enhancer of wing hair phenotype of fy2/fy6

fz30/fz25 is an enhancer of wing hair phenotype of fy1/fy6

fz[+]/fz30 is an enhancer of first basal wing cell phenotype of VangA3

fz[+]/fz30 is an enhancer of first basal wing cell phenotype of VangTbs42

NOT Enhancer of
Statement
Reference

fz[+]/fz30 is a non-enhancer of adult mushroom body alpha-lobe phenotype of DAAMEx1

fz[+]/fz30 is a non-enhancer of adult mushroom body beta-lobe phenotype of DAAMEx1

fz30 is a non-enhancer of eye phenotype of upd1GMR.PB

fz30 is a non-enhancer of ommatidium phenotype of Scer\GAL4sev.PM181, stanUAS.cUa

Suppressor of
Statement
Reference

fz30 is a suppressor of ommatidium phenotype of pkpk.sev

fz30 is a suppressor of phenotype of VangA3

fz30 is a suppressor of phenotype of VangTbs42

NOT Suppressor of
Statement
Reference

fz30 is a non-suppressor of eye phenotype of upd1GMR.PB

fz30 is a non-suppressor of ommatidium phenotype of Scer\GAL4sev.PM181, stanUAS.cUa

Additional Comments
Genetic Interactions
Statement
Reference

One copy of fz30 does not enhance the axonal projection defects seen in the α and β lobes of DAAMEx1 mutant mushroom bodies.

The characteristic swirl of wing hairs seen on the ventral surface of the wing in animals co-expressing fyScer\UAS.T:Avic\GFP and inScer\UAS.T:Ivir\HA1 under the control of two copies of Scer\GAL4ptc.PU is not seen in a fz21/fz30 background.

The proportion of symmetrical (R3/R3) ommatidia in the eyes of stanScer\UAS.cUa; Scer\GAL4sev.PM181 flies is unaffected by heterozygosity for fz30.

The addition of numb796 to fz37/fz30, leads to pupae that have sense organs composed of four cells with two socket cells but devoid of either sheath or neuronal cells.

Acts as a dominant enhancer of the dominant wing basal cell 1 phenotype of VangTbs42 and VangA3. In double mutant combinations between VangA3, VangA5 and VangTbs42 with fz1, fz25 and fz30, the fz-in type of polarity pattern was slightly less abnormal than in either single mutant. The domineering nonautonomy of VangA3 and VangTbs42 clones can be suppressed by fz25 and fz30.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer

Adler.

Associated with: Undefined lethal mutation.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
References (36)